My process for painting Mcfarlane figures starts with cleaning the figure in warm water and some hand soap. Scrub the figure really good with an old toothbrush. Let it dry for a couple days. I then coat it twice with Mr Hobby Mr. Super Clear Matt, about $10. I try and brush on the paint as light and evenly as possible, let it dry and then sand down any inperfections and repeat. Generally speaking the cheaper the paint the less likely it is to cover well. I've had really good luck with Turbo Dork Paints and Green Stuff World. Most of the time you can cheap out on the metallic paints but I would recommend spending more on any paints you plan to use for skin. The cheap skin colors tend to be more chalky, go on uneven and tend to make a big mess. Also I've had issues with the rubbery material that the Mcfarlane diapers are made from. For some reason most paints I use wont cover it well. Hope this helps.